Seismic-resistant structure of pipelines

Abstract

To provide an earthquake-resistant structure that can improve the watertightness of the earthquake-resistant structure of a rehabilitation pipe. [Solution] An earthquake-resistant structure 10 for a pipeline 1 applied to a rehabilitation pipe formed by spirally winding a strip-shaped member 4 and connecting the sides of adjacent strip-shaped members 4, comprising: a damage-inducing portion (guiding groove 20) formed in the rehabilitation pipe to induce damage; a flexible covering member 31 that is arranged to cover the damage-inducing portion from the inside of the rehabilitation pipe and has a pair of contact portions 31a that contact the rehabilitation pipe on both sides of the damage-inducing portion in the pipe axis direction of the rehabilitation pipe; and a water-stopping portion 40 that stops water from entering a groove (groove portion 5d) formed in a connecting portion (connecting member 5) that connects the sides of adjacent strip-shaped members 4 at a position opposite to the contact portions 31a.

Description

Technical Field

[0001] The present invention relates to the technology of the seismic structure of pipelines.

Background Art

[0002] Conventionally, the technology of the seismic structure of pipelines has been known. For example, it is as described in Patent Document 1.

[0003] Patent Document 1 discloses a seismic structure having a groove-shaped guiding medium for inducing the generation of cracks formed on the inner peripheral surface of a pipeline, a covering body having flexibility capable of covering the guiding medium from the inner peripheral side of the pipeline, and a sleeve for pressing against the inner peripheral surface of the pipeline by expanding the diameter of the covering body from the inside.

[0004] In the technology described in Patent Document 1, when a load is applied to the pipeline due to an earthquake or the like, it is possible to induce cracks to occur at the portion where the guiding medium is formed. Thereby, it is possible to avoid the occurrence of cracks in other parts of the pipeline. Further, the guiding medium is sealed with the covering body. Therefore, it is possible to prevent the surrounding groundwater from entering the pipeline through the generated cracks.

[0005] Here, an already installed pipeline (existing pipeline) may be rehabilitated in order to improve seismic performance and the like. As one method for rehabilitating an existing pipeline, a rehabilitation method using a strip member is known. In this rehabilitation method, a strip member is fed into the existing pipeline, and the strip member is wound in a spiral shape along the inner peripheral surface of the existing pipeline. The side portions of adjacent strip members are connected by an appropriate method. Thereby, the strip member is formed into a tubular (cylindrical) shape along the inner periphery of the existing pipeline. Thereafter, a rehabilitation pipe in which the existing pipeline and the strip member are integrated is formed by injecting a filler between the existing pipeline and the strip member.

[0006] It is desirable to apply an earthquake-resistant structure, such as the one described in Patent Document 1, to such rehabilitated pipes. However, in rehabilitated pipes using the strip-shaped members described above, grooves may be formed at the connection points of adjacent strip-shaped members. When such grooves are formed, even if a covering member like the one in Patent Document 1 is provided, there is a risk that water may flow through the grooves. Therefore, for example, if a crack occurs, it may not be possible to prevent surrounding groundwater from entering the pipeline. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Patent No. 4695381 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] One aspect of this disclosure has been made in view of the above circumstances, and the problem it seeks to solve is to provide an earthquake-resistant structure that can improve the watertightness of the earthquake-resistant structure of a rehabilitation pipe. [Means for solving the problem]

[0009] The problem that one aspect of this disclosure aims to solve is as described above, and the means for solving this problem will now be explained.

[0010] An earthquake-resistant structure for a pipeline according to one aspect of the present disclosure is an earthquake-resistant structure for a pipeline that is applied to a rehabilitated pipe formed by spirally winding a strip-shaped member and connecting the sides of adjacent strip-shaped members, comprising: a damage-inducing portion formed in the rehabilitated pipe that induces damage; a flexible covering member that is arranged to cover the damage-inducing portion from the inside of the rehabilitated pipe and has a pair of contact portions that contact the rehabilitated pipe on both sides of the damage-inducing portion in the axial direction of the rehabilitated pipe; and a water-stopping portion that seals a groove formed in a connecting portion connecting the sides of adjacent strip-shaped members at a position opposite to the contact portions.

[0011] In one embodiment of the present disclosure, the water-stopping portion comprises a notch formed to traverse the groove and a filling member filled into the notch.

[0012] In one aspect of this disclosure, the grooves are formed in parallel with respect to the connecting portion, and the notches are formed to traverse the parallel grooves.

[0013] In one embodiment of this disclosure, the notch is formed to extend perpendicularly to the groove.

[0014] In one embodiment of this disclosure, the notches are formed in multiple locations corresponding to the contact portions.

[0015] Furthermore, an earthquake-resistant structure for a pipeline according to one aspect of this disclosure further comprises expansion members provided inside a pair of the contact portions in the radial direction of the rehabilitated pipe, which expand the contact portions from the inside. [Effects of the Invention]

[0016] According to one aspect of this disclosure, the watertightness in the seismic-resistant structure of a rehabilitation pipe can be improved. [Brief explanation of the drawing]

[0017] [Figure 1] A side cross-sectional view showing a pipeline and manhole to which an earthquake-resistant structure according to one embodiment of the present invention is applied. [Figure 2] A side cross-sectional view showing the earthquake-resistant structure. [Figure 3] A diagram showing the seismic-resistant sections. [Figure 4] Enlarged side cross-sectional view showing the earthquake-resistant structure. [Figure 5] Enlarged side cross-sectional view showing the strip-shaped member and connecting member. [Figure 6] A cross-sectional view showing the watertight section as seen from the circumferential direction of the pipeline. [Figure 7] Side cross-sectional view showing the seismic-resistant structure according to the modified example.

Mode for Carrying Out the Invention

[0018] Hereinafter, the directions indicated by the arrows U, D, F, and B in the figures will be defined as the upward, downward, forward, and backward directions, respectively, for the description.

[0019] First, an overview of the pipeline 1 to which the seismic-resistant structure 10 according to an embodiment of the present invention is applied will be described. In this embodiment, as the pipeline 1, a regenerated pipe regenerated by arranging the belt-shaped member 4 in a spiral shape along the inner peripheral surface of the existing pipe 3 is assumed.

[0020] Specifically, as shown in FIGS. 2 to 5, the belt-shaped member 4 is arranged in a spiral shape along the inner peripheral surface of the existing pipe 3 buried in the ground. The belt-shaped member 4 is a member formed in a long and substantially rectangular plate shape. The belt-shaped members 4 arranged in a spiral shape are arranged such that the side portions are adjacent to each other in the pipe axis direction of the pipeline 1. The side portions of the adjacent belt-shaped members 4 are connected to each other by a connecting member 5 formed in a longitudinal shape.

[0021] The connecting member 5 is a member formed in a long and substantially rectangular plate shape with a smaller width (front-rear width in the figure) compared to the belt-shaped member 4. As shown in FIG. 5, engaging portions 5a that can engage with the belt-shaped member 4 are formed at both front and rear ends of the connecting member 5.

[0022] The connecting member 5 is arranged in a spiral shape along the inner peripheral surface of the existing pipe 3 in the same manner as the belt-shaped member 4, and connects the side portions of the adjacent belt-shaped members 4. By connecting the side portions of the adjacent belt-shaped members 4 with the connecting member 5, the belt-shaped member 4 is formed into a tubular (cylindrical) shape. At this time, a slight gap is formed between the front and rear end faces of the belt-shaped member 4 and the connecting member 5. This gap is hereinafter referred to as a groove portion 5d. The pair of groove portions 5d are formed in a spiral shape that is parallel to each other (extends substantially parallel to each other) along the connecting member 5.

[0023] A filler material 6 is filled between the strip-shaped member 4 and the existing pipe 3. This forms a pipeline 1 (rehabilitated pipe) in which the strip-shaped member 4 and the existing pipe 3 are integrated. For convenience, in some drawings, the hatching showing the cross-section of a part of the pipeline 1 (strip-shaped member 4, connecting member 5, and filler material 6) has been appropriately omitted.

[0024] Next, we will describe the seismic-resistant structure 10 of the pipeline 1 according to one embodiment of the present invention.

[0025] The seismic-resistant structure 10 shown in Figures 1 and 2 is designed to guide damage to the pipeline 1 in the middle section connected to the manhole 2, and to prevent water leakage from the damaged section. The seismic-resistant structure 10 mainly comprises a guide groove 20, a seismic-resistant section 30, and a water-stopping section 40.

[0026] The guide groove 20 shown in Figure 2 is designed to guide damage to the pipeline 1 when a load is applied to it due to an earthquake or the like. The guide groove 20 is formed in a concave shape on the inner surface of the pipeline 1. The guide groove 20 is formed along the circumferential direction of the inner surface of the pipeline 1. The guide groove 20 is formed in the middle of the pipeline 1 (more specifically, near the manhole 2). The guide groove 20 can be formed by processing the inner surface of the pipeline 1 using appropriate tools. By forming the guide groove 20 in the pipeline 1, the strength of the pipeline 1 can be locally reduced.

[0027] In this embodiment, the guide groove 20 is shown to have a depth that extends from the inner circumferential surface of the pipeline 1 (strip-shaped member 4) to the existing pipe 3, but the depth of the guide groove 20 is not particularly limited. For example, it can be formed to a depth approximately the same as the thickness of the strip-shaped member 4. Alternatively, the guide groove 20 may be formed on the strip-shaped member 4 to match the position of a joint portion (not shown) formed in the middle of the existing pipe 3.

[0028] The seismic-resistant section 30 shown in Figures 1 to 3 is designed to stop water leakage from the pipeline 1 in the guide channel 20 if damage such as cracks occurs. Specifically, the seismic-resistant section 30 can prevent water leakage from the pipeline 1 and the intrusion of water and soil into the pipeline 1 from the outside. The seismic-resistant section 30 mainly comprises a covering member 31 and an expansion member 32.

[0029] The covering member 31 shown in Figures 2 to 4 is a member positioned to be in contact with the inner circumferential surface of the conduit 1. The covering member 31 is made of an elastic material (such as rubber). The covering member 31 is formed in an annular shape. The outer diameter of the covering member 31 is formed to be approximately the same as the inner diameter of the conduit 1. As shown in Figure 4, the covering member 31 has a contact portion 31a.

[0030] The contact portion 31a is the part that contacts the inner circumferential surface of the pipe 1 and seals off water between it and the pipe 1. The contact portions 31a are formed near both the front and rear ends of the covering member 31 (both ends in the direction in which the pipe 1 extends (pipe axis direction)). The outer circumferential surface of the contact portion 31a may have an appropriate uneven shape formed to seal off water between it and the inner circumferential surface of the pipe 1.

[0031] The covering member 31 is positioned to cover the guide groove 20 formed in the conduit 1 from the inside of the conduit 1. Specifically, the covering member 31 is positioned so that the central part of the conduit 1 in the conduit axis direction faces the guide groove 20. This positions the covering member 31 so that the guide groove 20 is located between the two contact portions 31a.

[0032] The expansion member 32 shown in Figures 2 to 4 is a member for pressing the covering member 31 against the inner circumferential surface of the conduit 1. The expansion member 32 is formed in an annular shape. The expansion member 32 is formed by combining multiple (four in the illustrated example) divided segments 32a in the circumferential direction. By moving adjacent segments 32a relative to each other in the circumferential direction, the diameter of the expansion member 32 can be changed (for example, expanded). Also, by fixing adjacent segments 32a together, the expansion member 32 can be held at any desired diameter.

[0033] Two expansion members 32 are provided for each covering member 31. The expansion members 32 are positioned on either side of the guide groove 20 in the axial direction of the conduit 1. More specifically, the expansion members 32 are positioned opposite each of the pair of contact portions 31a formed on the covering member 31, from the radially inward side of the conduit 1. The expansion members 32 are positioned so as to be in contact with the inner circumferential surface of the covering member 31. The expansion members 32 are held in an expanded state so as to press the covering member 31 against the inner circumferential surface of the conduit 1.

[0034] The water-stopping sections 40 shown in Figures 2 and 6 are for sealing the groove 5d. The water-stopping sections 40 are formed on the inner circumferential surface of the pipeline 1 at a position opposite to the expansion member 32 (a position that is the same as the expansion member 32 in the front-rear direction). In this embodiment, the spirally formed groove 5d crosses the front-rear pair of expansion members 32 in the front-rear direction. Therefore, one water-stopping section 40 is formed at each of the two positions opposite the front-rear pair of expansion members 32. The water-stopping sections 40 mainly consist of a notch 41 and a filling member 42.

[0035] The notch 41 is a portion formed to cut into the inner circumferential surface of the conduit 1 to a predetermined depth. The notch 41 is formed at a position opposite to the expansion member 32. The notch 41 is formed to traverse the groove 5d. Specifically, the notch 41 is formed to extend in a direction intersecting the groove 5d when viewed from the inside of the conduit 1 (see Figure 2). The notch 41 is formed to extend perpendicular to the groove 5d when viewed from the inner circumferential side of the conduit 1. As shown in Figure 6, the notch 41 is formed to a position deeper than the groove 5d. In this way, the groove 5d, which extends spirally along the inner circumference of the conduit 1, is cut by the notch 41.

[0036] Although Figure 6 shows an example of a roughly rectangular notch 41, the shape of the notch 41 is not particularly limited. For example, the notch 41 can be formed into an appropriate shape depending on the shape of the tool (cutting tool, etc.) used to form the notch 41.

[0037] The filling member 42 is a material that is filled into the cut portion 41. Various materials can be used as the filling member 42, such as silicone-based or epoxy-based adhesives. Preferably, the filling member 42 hardens after being filled into the cut portion 41, and more preferably, it has elasticity after hardening. When filling the cut portion 41 with the filling member 42, any filling member 42 that overflows from the cut portion 41 (the inner circumferential surface of the strip-shaped member 4) may be removed as appropriate. This helps to keep the inner circumferential surface of the strip-shaped member 4 smooth.

[0038] By filling the notched portion 41 with the filling material 42, the fluid flow path through the groove portion 5d is blocked in the water-stopping portion 40.

[0039] With the earthquake-resistant structure 10 configured in this way, it is possible to prevent water leakage from the pipeline 1 in the event that the pipeline 1 is damaged by an earthquake or the like.

[0040] Specifically, when a load is applied to the pipeline 1 due to an earthquake or the like, cracks or other damage will occur in the area where the guide groove 20 (see Figures 2 and 4, etc.), which has lower strength compared to other parts, is formed. In other words, damage can be intentionally caused in the guide groove 20. Furthermore, the guide groove 20 is covered by a covering member 31, and the contact portion 31a of the covering member 31 is pressed against the inner circumferential surface of the pipeline 1. As a result, the space between the inner circumferential surface of the pipeline 1 and the covering member 31 is sealed by the contact portion 31a, so even if cracks or other damage occur in the guide groove 20, water leakage can be prevented.

[0041] In particular, in this embodiment, the pipeline 1 has a groove (groove 5d) formed on its inner circumferential surface that straddles the contact portion 31a of the covering member 31 from front to back. Therefore, there is a concern that water may flow through the groove 5d and cause leakage. However, in this embodiment, the groove 5d is sealed by the water-stopping portion 40 in the portion of the covering member 31 that faces the contact portion 31a (see Figure 6). Therefore, even in the pipeline 1 where the groove 5d is formed, the water-stopping properties can be improved and leakage can be prevented.

[0042] Furthermore, in the seismic-resistant structure 10 according to this embodiment, as shown in Figure 4, etc., independent expansion members 32 are provided for each of the pair of contact portions 31a formed on the covering member 31. Therefore, even if damage (such as rupture) occurs to the pipeline 1 in the guide groove 20 and the front and rear intermediate portions of the covering member 31 undergo elastic deformation (expansion and contraction), the expansion members 32 do not hinder the expansion and contraction of the covering member 31. This prevents misalignment between the contact portion 31a of the covering member 31 and the water-stopping portion 40, thereby ensuring watertightness.

[0043] The following describes a method for forming the aforementioned earthquake-resistant structure 10 in a pipeline 1 installed underground.

[0044] First, as shown in Figure 2, a process of forming guide grooves 20 on the inner surface of the pipeline 1 (guide groove formation process) is carried out. At this time, the inner surface of the pipeline 1 is processed using a tool appropriate to the shape of the guide grooves 20, such as a cutter or a drill. It is desirable that the guide grooves 20 be formed in the vicinity of the manhole 2 within the pipeline 1.

[0045] Furthermore, the guide groove 20 may be filled with a filler material (for example, rubber or synthetic resin) to fill the internal space of the guide groove 20.

[0046] Next, the position where the contact portion 31a of the covering member 31 is expected to be located is identified, and a step of forming a watertight portion 40 (watertight portion formation step) is performed at the position where this position overlaps with the groove (groove portion 5d). Specifically, a cut portion 41 is formed so as to cross the groove portion 5d, and a filling member 42 is filled into the formed cut portion 41. If necessary, the material is left for a certain period of time until the filling member 42 hardens.

[0047] Next, a process of installing an earthquake-resistant section 30 in the pipeline 1 (earthquake-resistant section installation process) is carried out. First, a covering member 31 is installed so as to cover the guide groove 20 formed on the inner circumferential surface of the pipeline 1 from the inside. Next, two expansion members 32 are installed inside the covering member 31. The expansion members 32 are expanded using an appropriate tool, and the contact portion 31a of the covering member 31 is expanded from the inside and pressed against the inner circumferential surface of the pipeline 1. In this state, the expansion members 32 are fixed. In this way, an earthquake-resistant structure 10 is formed inside the pipeline 1.

[0048] As described above, the seismic-resistant structure 10 of the pipeline 1 according to this embodiment is An earthquake-resistant structure 10 for a pipeline 1 applied to a rehabilitated pipe formed by spirally winding strip-shaped members 4 and connecting the sides of adjacent strip-shaped members 4, The rehabilitation pipe is formed with a damage-inducing section (guidance groove 20) that induces damage, A covering member 31 having flexibility and being positioned to cover the damage induction portion from the inside of the rehabilitation pipe, and having a pair of contact portions 31a that contact the rehabilitation pipe on both sides of the damage induction portion in the pipe axis direction of the rehabilitation pipe, A water-stopping portion 40 is provided at a position opposite to the contact portion 31a, which stops water from entering a groove (groove portion 5d) formed in a connecting portion (connecting member 5) that connects the sides of adjacent strip-shaped members 4, It is equipped with the following features.

[0049] By configuring it in this way, the watertightness of the earthquake-resistant structure 10 of the rehabilitation pipe can be improved. Specifically, by forming a watertight section 40 in the groove (groove section 5d) formed in the connection part of the strip-shaped member 4, it is possible to prevent water from flowing through the groove.

[0050] Furthermore, the water-stopping section 40 is A notch 41 formed to cross the groove, A filling member 42 is filled into the aforementioned cut portion 41, It is equipped with the following features.

[0051] By configuring it in this way, the watertightness can be improved more effectively. Specifically, by forming a notch 41 that crosses the groove and filling the notch 41 with a filling material 42, the flow of water through the groove can be prevented more reliably.

[0052] Furthermore, the groove (groove portion 5d) is Multiple (two in this embodiment) are formed in parallel with respect to the aforementioned connection portion, The aforementioned cut portion 41 is It is formed to traverse a plurality of parallel grooves.

[0053] By configuring it in this way, even when multiple parallel grooves are formed, the water-stopping section 40 can be made into a simple structure.

[0054] Furthermore, the notched portion 41 is It is formed to extend perpendicularly to the groove.

[0055] By configuring it in this way, the length of the cut portion 41 can be shortened, thereby reducing the burden of construction.

[0056] Furthermore, the seismic-resistant structure 10 of the pipeline 1 according to this embodiment is The rehabilitation pipe further comprises expansion members 32 provided inside each of the pair of contact portions 31a in the radial direction, which expand the contact portions 31a from the inside.

[0057] By configuring it in this way, the watertightness can be improved more effectively. Specifically, by providing independent expansion members 32 to each of the pair of contact portions 31a formed on the covering member 31, it becomes less likely that the central part of the covering member 31 will be hindered from expanding. As a result, even if the rehabilitation pipe is damaged from the guide groove 20 due to an earthquake or vibration from the ground, it is possible to prevent the position of the notch 41 formed in the groove and the contact portion 31a of the covering member 31 from shifting.

[0058] Furthermore, the guide groove 20 according to this embodiment is one form of the damage guide part according to the present invention. Furthermore, the connecting member 5 according to this embodiment is one form of the connecting part according to the present invention. Furthermore, the groove 5d according to this embodiment is one form of the groove according to the present invention.

[0059] Although embodiments of the present invention have been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention as described in the claims.

[0060] For example, in this embodiment, an example is shown in which one water-stopping portion 40 is formed corresponding to one contact portion 31a formed on the covering member 31, but the present invention is not limited to this. That is, it is also possible to form multiple water-stopping portions 40 corresponding to one contact portion 31a.

[0061] Figure 7 shows an example (modified version) in which multiple (three) water-stopping sections 40 are formed corresponding to one contact section 31a. In this modified version, the three water-stopping sections 40 are formed approximately parallel to each other, with appropriate spacing in the direction in which the groove (groove section 5d) extends. By forming multiple water-stopping sections 40 corresponding to one contact section 31a in this way, the water-stopping sections 40 can be formed at positions that are displaced from each other in the axial direction of the pipeline 1. This ensures watertightness even if the positions of the water-stopping sections 40 formed in the groove and the contact section 31a are slightly misaligned due to vibrations such as earthquakes or errors during construction.

[0062] As described above, in the seismic-resistant structure 10 of the modified pipeline 1, The aforementioned cut portion 41 is Multiple such contact portions are formed corresponding to the aforementioned contact portion 31a.

[0063] By configuring it in this way, the watertightness can be improved more effectively.

[0064] Furthermore, although the above embodiment illustrates a water-stopping section 40 formed by filling a notch 41 with a filling member 42, the present invention is not limited to this. That is, the water-stopping section 40 can be configured in any way as long as it can block the groove formed on the inner circumferential surface of the pipeline 1 and obstruct the flow of water, etc. For example, it is also possible to form a water-stopping section 40 by directly filling the groove (groove section 5d) with the filling member 42 without forming a notch 41.

[0065] Furthermore, although the above embodiment shows an example in which the notches 41 are formed to traverse multiple grooves (groove portions 5d), the present invention is not limited to this. For example, it is also possible to form one notch 41 in each of the groove portions 5d.

[0066] Furthermore, in the above embodiment, an example was shown in which the notch 41 is formed so as to extend perpendicularly to the groove (groove portion 5d) when viewed from the inner circumference side of the conduit 1. However, the present invention is not limited to this, and the direction of the notch 41 can be arbitrarily changed. For example, the notch 41 can be formed so as to extend in the circumferential direction of the conduit 1.

[0067] Furthermore, although the above embodiment shows an example in which a pair of independent expansion members 32 are provided corresponding to a pair of front and rear contact portions 31a formed on the covering member 31, the present invention is not limited to this. For example, it is also possible to provide a single expansion member 32 integrally formed with respect to a pair of front and rear contact portions 31a (an expansion member 32 that extends from the front end to the rear end of the covering member 31).

[0068] Furthermore, in the above embodiment, an example was shown in which a connecting member 5 is used as a connecting portion to connect the sides of the helically wound strip-shaped members 4, but the present invention is not limited to this. For example, it is also possible to form engaging portions on the sides of the strip-shaped members 4 that can engage with each other. In this case, it is also possible to form a connecting portion by directly connecting the engaging portions of adjacent strip-shaped members 4 without using a connecting member 5.

[0069] Furthermore, although the above embodiment described an example using two grooves (groove portion 5d) formed in the connecting member 5, the present invention is not limited to this and can be applied to various grooves. In other words, the present invention can be applied to various grooves formed in the connecting portion that connects the sides of adjacent strip-shaped members 4, and the shape, number, etc. of the grooves are not particularly limited. [Explanation of symbols]

[0070] 1 conduit 4. Strip-shaped member 5. Connecting Members 5d groove 10. Earthquake-resistant structure 20 Guide groove 30. Earthquake-resistant section 31 Covering member 31a Contact part 32 Expansion Member 40 Water-stopping section 41 Cut section 42 Filling material

Claims

1. An earthquake-resistant structure for a pipeline applied to a rehabilitated pipe formed by spirally winding strip-shaped members and connecting the sides of adjacent strip-shaped members, A fracture induction portion is formed in the rehabilitation pipe to induce fracture, A covering member having flexibility and positioned to cover the damage induction portion from the inside of the rehabilitation pipe, and having a pair of contact portions that contact the rehabilitation pipe on both sides of the damage induction portion in the pipe axis direction of the rehabilitation pipe, A water-stopping portion is provided at a position opposite to the contact portion, which seals a groove formed in a connecting portion connecting the sides of adjacent strip-shaped members, An earthquake-resistant structure for pipelines equipped with the following features.

2. The aforementioned water-stopping section is A notch formed to cross the groove, A filling member to be filled into the aforementioned cut portion, Equipped with, The seismic-resistant structure for a pipeline according to claim 1.

3. The groove is Multiple units are formed in parallel with respect to the aforementioned connection portion, The aforementioned cut portion is Formed to traverse a plurality of parallel grooves, The seismic-resistant structure for a pipeline according to claim 2.

4. The aforementioned cut portion is Formed to extend perpendicularly to the groove, The seismic-resistant structure for a pipeline according to claim 2.

5. The aforementioned cut portion is Multiple units are formed corresponding to the aforementioned contact portion. The seismic-resistant structure for a pipeline according to claim 2.

6. The rehabilitation pipe further comprises expansion members provided on the inside of each of the pair of contact portions in the radial direction, which expand the contact portions from the inside. The seismic-resistant structure for a pipeline according to claim 1.

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